ES2644533T3 - Candles capable of spreading a plurality of volatile active substances simultaneously - Google Patents

Description

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DESCRIPTION

Candles capable of spreading a plurality of volatile active substances simultaneously

The present invention relates to candles capable of diffusing a plurality of volatile active substances simultaneously comprising a base part, at least one wick and a plurality of cartridges carrying volatile active substances for diffusion, providing the base part with a plurality of holes that are adapted to receive the cartridges. The invention also relates to a method for diffusing a plurality of active substances simultaneously comprising the manufacture and combustion of such a candle.

Prior art

Various types of candles capable of diffusing an active substance into the surrounding area after combustion are described. In particular, scented candles are described. Candles capable of spreading a plurality of fragrances are also known. Such candles are constituted from several successive layers, each layer comprising a different type of perfume and often having a different color. However, these candles do not allow the diffusion of the plurality of fragrances at the same time, because each fragrance is diffused in turn, depending on the layer that is under combustion.

Therefore, the provision of candles that are capable of spreading a plurality of volatile active substances at the same time is desired. It also desires the provision of candles that allow the consumer to select and combine the fragrances that will be diffused through the candle according to their wishes. It is also advantageous to provide aromatic candles that are capable of efficiently diffusing large quantities of a plurality of fragrances while maintaining manufacturing costs at a low level. Such candles must also preserve good combustion conditions. The present invention is directed to and solves these problems and is defined by the claims. Document US2005 / 0136649 discloses candles with fragrance deposits.

Document US2007 / 0003895 refers to an aromatic candle with multiple aroma components.

Detailed description of the invention

The present inventor has solved the aforementioned problems by providing a candle capable of diffusing a plurality of volatile active substances simultaneously comprising a base part, at least one wick and a plurality of cartridges, each carrying at least a volatile active substance, said base part being provided with a plurality of holes adapted to receive said cartridges in an essentially vertical position with respect to the base part, the diameter of the cartridges being comprised between 0.5 cm and 5.1 cm and remaining the diameter of the base part between 1.3 cm and 30.5 cm.

In a preferred embodiment of the invention, the candle comprises two or three cartridges and, more preferably, three cartridges.

In any of the embodiments of the invention, the volatile active substance carried by each cartridge may be identical or different. Preferably, the volatile active substance carrying at least one of the cartridges is different with respect to the volatile active substance carried by the other cartridges. More preferably, each cartridge carries a different volatile active substance.

The cartridges can be inserted into the base part or can be provided separately and inserted into the base part by the consumer before combustion of the candle. This allows the consumer to select the cartridges according to the desired result to achieve and combine the cartridges comprising various types of volatile active substances according to their needs.

The wick can be part of the cartridges and / or part of the base part. In the case where more than one wick is presented, the wicks are separated from each other preferably by at least 2.5 cm. The at least one wick may be constituted by any wick material known to a person skilled in the art. Examples of preferred wicks are those that contain a paper core, which has been found to provide the most desired combination in terms of combustion characteristics, especially with regard to attributes such as smoke, proliferation, fragrance release and combustion rate. . However, other types of suitable wicks known to persons skilled in the art may be used in accordance with the present invention. Non-limiting examples of suitable wicks and wick materials are commercially available from Atkins-Pearce of Covington, KY, USA.

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In a preferred embodiment, the distance between the center of each hole and the center of the neighboring holes is between 1/3 and 1/2 times with respect to the diameter of the base part. For example, for a base part having a diameter of 7.6 cm, the distance between the center of each hole and the center of the neighboring holes is between 2.5 cm and 3.8 cm. This has the advantage of providing a good accumulation of candle (ie, optimal size and shape of the melted area) and therefore provides good diffusion and impact of the volatile active substance.

In a preferred embodiment of the invention, the length of the cartridges is between 1.3 cm and 30.5 cm.

In another preferred embodiment, the diameter of the holes and cartridges is comprised between 1/15 and 1/3 of times with respect to the diameter of the base part.

In another preferred embodiment, the base part has exactly three holes that are positioned such that the centers of the three holes form a triangle that is essentially equilateral. The triangle is considered to be essentially equilateral if each angle of the triangle is between 55 and 65 degrees, preferably if each angle is between 58 and 62 degrees, more preferably each angle is 60 degrees. Such a design is particularly advantageous when each cartridge comprises a wick, to prevent the superposition of the flame and burning. Even when the wick is part of the base part, such position of the holes and cartridges has the advantage of providing an accumulation (i.e., size and shape of the melted area) that allows an improved diffusion of the volatile active substance.

In another preferred embodiment, the holes are positioned such that the center of each hole is separated by at least 1.3 cm, more preferably by at least 1.9 cm with respect to the periphery of the base part. This embodiment is especially preferred when each cartridge comprises a wick to prevent dripping of pillar candles or excessive heating of the container in the case of container candles.

The active substance carried by the cartridges can be of any type of volatile active substance. Preferably, it is a perfume, a bad smell reagent, an antibacterial agent, an insect repellent or any combination thereof. More preferably, it is a perfume, a bad smell reagent or a mixture thereof and more preferably, a perfume.

For the purposes of the present invention, a "perfume" includes any ingredient to perfume or a mixture thereof. An "perfume ingredient" is referred to herein as a compound that is commonly used in the perfume industry, that is, a compound that is used as an active ingredient in aromatic candles to impart a hedonic effect around it. In other words, an ingredient or mixture as such, which is considered to be perfumed, must be recognized by a person skilled in the perfume technique as who can impart or modify in a positive or pleasant way, the smell of a candle, and not Just have a smell. In addition, this definition also refers to include compounds that do not necessarily have a smell but that are capable of modulating the smell of a composition to perfume and, as a result, modifying a user's perception of the smell of a composition as such.

The nature and type of these ingredients to perfume do not justify a more detailed description in this document, which, in any case, will not be exhaustive, and the person skilled in the art can select them based on their general knowledge, the intention to use or application and the desired organoleptic effect. In general terms, these perfume ingredients belong to chemical classes as diverse as alcohols, aldehydes, ketones, esters, ethers, acetates, nitriles, terpene hydrocarbons, sulfurous or nitrous heterodyl compounds and essential oils, and said perfume ingredients can be of natural or synthetic origin. Many of these ingredients are listed, in any case, in reference texts such as the book of S. Arctander, Perfume and Flavor Chemicals, 1969, Montclair, New Jersey, USA, or its most recent versions, or in other works of a similar nature, as well as in the abundant patent literature in the field of perfume. It is further understood that said ingredients may also be compounds that are known to release, in a controlled manner, various types of compounds for perfuming.

By the term "bad smell reactive" or "bad smell reactive ingredient" we refer to compounds capable of reducing the perception of bad smell, that is, of an odor that is unpleasant or offensive to human smell through the effect against and / or masking bad odors. In a particular embodiment, these compounds have the ability to react with key compounds that cause known odors. The reactions result in the reduction of air levels of odor materials and the consequent reduction in the perception of bad odors.

Non-limiting examples of suitable insect repellents include citronella, dimethyl thalate and n, n-dimethyl-m-tolumide.

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The volatile active substance is normally presented in an amount between 10 and 25% by weight, based on the total weight of the cartridge.

The cartridge wax normally comprises a mixture of paraffin, soy wax and polyolefin wax or, alternatively, dithrimethylolpropane. In the first alternative, the wax preferably comprises between 60 and 80% paraffin, between 6 and 10% soy wax and between 1 and 6% polyolefin wax. In the second alternative, the wax is preferably one of those disclosed in European Patent Application Publication EP 1749080.

Typically, polyolefin wax is a hyperbranched polymer that is formed by polymerization of alpha olefins. The use of a polyolefin wax as such has the advantage of hardening the wax of the cartridges and improving the ability of the wax to bind to the oil, thus allowing the cartridges to incorporate high levels of volatile active substance, in Special perfumes. An example of a particularly popular polyolefin wax is sold under the trade name Vybar® 260 of Baker Petrolite.

The use of paraffin wax has beneficial effects on the texture of the surface of the cartridges, which appears smooth without marks. Examples of suitable paraffin wax include those sold under the trade name Paravan® 1300 and Paravan® 1270, commercially available from Exxon Mobile.

The base part wax can be any kind of wax known to the person skilled in the art. It may be constituted from the same wax as that of the cartridges or from a different wax. In a preferred embodiment, said wax comprises paraffin or a wax of natural origin such as soy wax or beeswax or a mixture thereof. Mixtures of soy wax and fully or partially refined paraffin waxes are especially preferred components of the base part wax. Preferably, the soy wax is completely hydrogenated.

In a preferred embodiment, the base part further comprises a volatile active substance, preferably a perfume.

The cartridge and the base part may further comprise optional additional ingredients to provide additional or improved functional and / or aesthetic improvements. In particular, additional materials that can be included in the wax include coloring agents, decorative materials, solvents, stabilizers, antioxidants and UV blockers. Such optional ingredients do not justify a more detailed description in this document, which in any case will not be exhaustive. The person skilled in the art is able to select them based on their general knowledge and the desired characteristics of the candle. In particular, the class and quantity of the additional ingredients are selected from those that do not alter the structure or combustion properties of the cartridges or the base part.

The base part can be a pillar candle or a container candle. When the candle is a container candle, it preferably has one or more of the following physical properties: a melting point between 51.7 ° C and 54.4 ° C, a needle penetration point of 17 mm maximum, according to It was measured using the ASTM D1321 procedure at 25 ° C and an oil content of 0.2% by weight maximum, based on the total weight of the base part. When the candle is a pillar candle, it preferably has one or more of the following physical properties: a melting point between 57.2 ° C and 60 ° C, a needle penetration point of 12 mm maximum, preferably 10 mm maximum, as measured using the ASTM D1321 procedure at 25 ° C and an oil content of 0.5% by weight maximum, with respect to the total weight of the base part.

When the base part is a pillar candle, it is further preferred that the wax of the base part be of the same type as the wax of the cartridges, as defined in any one of the embodiments described above.

Upon melting, the cartridges can form separate accumulations of melted wax without overlapping, so that the melted accumulations do not mix with each other or, alternatively, the cartridges and the base part can melt in such a way that they form a unique accumulation of melted wax. The latter is preferred when an especially intense diffusion of the volatile active substance is desired. However, separate accumulations of each cartridge are preferred when it is desired to maintain the opportunity to diffuse the volatile active substance of one or two of the cartridges independently from the others by combustion of some of the cartridges only, which depends of the circumstances. In a case as such, each cartridge preferably has a wick. For the purposes of the present invention, it is preferred that a single accumulation of melted wax be formed to improve the diffusion of the active substance.

The size of the melted accumulation can be determined by the person skilled in the art based on his general knowledge of the candle technique by varying the size of the wick and / or the melting point and hardness of the wax.

In another embodiment, the invention provides a method for diffusing a plurality of volatile active substances comprising the following subsequent steps:

a) manufacture a candle as described in any of the above embodiments; Y

5 b) combustion of the candle obtained in this way.

The candle is manufactured using common procedures in the technique of making candles. For example, the wax components are mixed with each other, then the wax is heated to a temperature sufficient to allow the formation of the candle, such as by molding or pouring into a container. More details of the processes that can be used to make candles of the present invention are provided in the Examples below.

10 Examples

Example 1

Preparation of a candle according to the invention

A base part was prepared using a wax comprising a mixture of soy wax and paraffin. The wax was heated to 76.7 ° C, poured into a mold and the base part cooled to room temperature to form a cylindrical candle having a diameter of 7.6 cm and a height of 15.2 cm.

Three holes were then drilled in the base part that was formed in this way. The holes have a diameter of 1.3 cm and a depth of 10.2 cm. The holes were placed in such a way that the center of each hole was 2.5 cm away from the center of the neighboring holes. The center of each hole was also at a distance of 1.3 cm from the periphery of the base part.

20 Three cartridges were prepared with a wax having the following ingredients, in the amounts indicated.

Table 1: Cartridge wax composition

 Ingredient

 Quantity (%)

 Paravan® 1300 MP 135-1401

 76.0

 Vybar® 2602)

 4.0

 Soybean C3003)

 10.0

 Perfume4 *

 10

 1) Paraffin wax, origin: Exxon Mobile 2) Polyolefin wax, origin: Baker Petrolite 3) Soy wax, origin: Cargill. 4) The three cartridges were produced separately, each with one of the following perfumes: a perfume that has a mango daisy character (No. 478168KW), a perfume that has a honeysuckle character (No. 458452) and a perfume that has a character of pina colada (n ° 299475), all available at Firmenich SA, Geneva, Switzerland.

Paraffin wax, polyolefin wax and soy wax were heated to 79.4 ° C and mixed well. The fragrance was then mixed with hot wax. The scented wax was then poured into the mold.

The physical properties of the cartridges were then determined. Needle penetration, as measured using the ASTM D1321 procedure at 25 ° C, was 20 mm. The melting point was 54.4 ° C.

The cartridges were then inserted into the holes in the base part prepared above.

Example 2

Preparation of a candle according to the invention

A base part was prepared using a wax comprising a mixture of soy wax and paraffin. The wax was heated to 76.7 ° C, poured into a mold and the base part cooled to room temperature to form a cylindrical candle having a diameter of 7.6 cm and a height of 15.2 cm.

Three holes were then drilled in the base part that was formed in this way. The holes have a diameter of 1.3 cm and a depth of 10.2 cm. The holes were placed such that the center of each hole was 2.5 cm away from the center of the other holes. The center of each hole was also 15 at a distance of 1.3 cm from the periphery of the base part.

Three cartridges were prepared with a wax that has the following ingredients, in the amounts indicated.

Table 2: composition of the wax of the cartridges

 Ingredient

 Quantity (%)

 Paravan® wax 1270 MP 135-1401)

 74.0

 Vybar® 2602)

 5.0

 Soybean C3003)

 6.0

 Fragrance4)

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 1) Paraffin oil, origin: Exxon Mobile 2) Polyolefin wax, origin: Baker Petrolite 3) Soy wax, origin: Cargill. 4) The three cartridges were produced separately, each with one of the following perfumes: a perfume that has a mango daisy character (No. 478168KW), a perfume that has a honeysuckle character (No. 458452) and a perfume that has a character of pina colada (n ° 299475), available at Firmenich SA, Geneva, Switzerland.

Paraffin wax, polyolefin wax and soy wax were heated to 79.4 ° C and mixed well. The fragrance was then mixed with hot wax. The scented wax was then poured into the mold.

20 The physical properties of the cartridges were then determined. Needle penetration, as measured using the ASTM D1321 procedure at 25 ° C, was 20 mm. The melting point was 54.4 ° C.

The cartridges were then inserted into the holes in the base part prepared above.

Claims (13)

5 10 fifteen twenty 25 30 35 1. A candle capable of diffusing a plurality of volatile active substances simultaneously comprising a base part, at least one wick and a plurality of cartridges, each carrying at least one volatile active substance, providing said base part with a plurality of holes adapted to receive said cartridges in an essentially vertical position with respect to the base part, the diameter of the cartridges being comprised between 0.5 cm and 5.1 cm and the diameter of the base part being comprised between 1.3 cm and 30.5 cm and in which the distance between the center of each hole and the center of the neighboring holes is between 1/3 and 1/2 of the diameter of the base part. 2. A candle according to claim 1, wherein each cartridge carries a volatile active substance. 3. A candle according to claim 1 or 2, comprising three cartridges. 4. A candle according to any one of claims 1 to 3, wherein the diameter of the holes and the cartridges is comprised between 1/15 and 1/3 times of the diameter of the base part. A candle according to any one of claims 1 to 4, wherein the base part is provided with three holes that are positioned such that the centers of the holes form a triangle that is essentially equilateral. 6. A candle according to claim 5, wherein each angle of the triangle is between 55 and 65 degrees. 7. A candle according to any one of claims 1 to 6, wherein the holes are positioned such that the center of each hole is at least 1.3 cm away from the periphery of the part base. A candle according to any one of claims 1 to 7, wherein the volatile active substance is a perfume, a bad smell reagent, an antibacterial agent, an insect repellent or any combination thereof. 9. A candle according to claim 8, wherein the volatile active substance is a perfume. 10. A candle according to any one of claims 1 to 9, wherein the volatile active substance is present in an amount comprised between 10 and 25% by weight, based on the total weight of the cartridges. 11. A candle according to any one of claims 1 to 10, wherein the wax of the cartridges comprises a) a mixture of paraffin, soy wax and a polyolefin wax; or b) ditrimethylolpropane tetraestearate. 12. A candle according to any one of claims 1 to 10, wherein the wax of the base part comprises paraffin or a wax of natural origin, such as soy wax or beeswax or a mixture thereof. 13. A method for disseminating a plurality of volatile active substances simultaneously comprising: a) manufacturing a candle according to any one of claims 1 to 12; Y b) combustion of the candle obtained in this way.